The Fox 40 Classic Whistle is a set of 12 brand new black whistles made of durable plastic. Designed as coach and referee equipment, these whistles are perfect for sports activities. With a Canadian origin, these whistles are ideal for those in need of reliable and high-quality communication tools on the field. The Fox 40 brand is well-known for its superior products, making this whistle box a must-have for any coach or referee. Box of 12 whistle.